Exponential Functions Test 4-3 Review

• The number of monkeys at the end of the second year.

• The growth factor of the number of monkeys

• The initial value of the number of monkeys

• The decay factor of the number of monkeys

A price of a pressure washer is $330. Each year the value of the washer decreases by 10%. Which statement is true about the graph represents the relationship between the value of the washer in dollars, y, and the number of years, x?

• The graph has a vertical asymptote at x=0 .

• The y-intercept of the graph is 297.

• The graph has a horizontal asymptote at y=10.

• The y-intercept of the graph is 330.

• The range is all real numbers.

• The range is all real numbers less than 0.

• The domain is all real numbers less than 0.

• The domain is all real numbers less than 0.

This year the number seniors who join the senior computer classes was 165. Each year the number of seniors who join the computer classes increases 2%. Which function model the number of seniors joining in computer classes after x years?

Categorize if the given function is exponential growth or exponential decay.

Groups:

(a) Exponential Growth

,

(b) Exponential Decay

Research studies the students at a school over time and model a data using an exponential function. The initial estimated students were 1,300. After the first year, the number of students was 2,530 if the number of students continues to grow at this rate each year, which function can be used to model the students years after the researchers began their study?

The population of jellyfish found in part of the Gulf of Mexico has been increasing since the year 2000. The table shows the number of jellyfish, y, observed in the area of x years after 2000. Which of the following exponential functions best model the data?

A scientist added cells to a petri dish. The cells increased by the same percent each day, as shown in the graph. Which equation represents the relationship between, y, the number of cells in the dish, and x, the number of days?

The graph of the exponential function is shown.

Does it show a Growth or Decay?